Information transmission method and device

ABSTRACT

Embodiments of the present invention provide an information transmission method and apparatus. The method comprises: a first device obtains first indication information sent by a second device, the first indication information being used for indicating first system information required by the second device; and the first device sends the first system information according to the first indication information. By means of the embodiments of the present application, the sending efficiency can be improved, signaling overheads can be reduced, and a resource waste can be avoided.

CROSS-REFERENCE TO RELATED APPLICATIONS

This is a continuation application of U.S. application Ser. No.16/092,388, filed on Oct. 9, 2018, which is a national phase ofInternational Patent Application No. PCT/CN2016/087095, filed on Jun.24, 2016, the contents of which are hereby incorporated by reference intheir entireties.

TECHNICAL FIELD

The present disclosure refers to the field of communications, and moreparticularly to a method and device for information transmission.

BACKGROUND

In the existing Long Term Evolution (LTE) system, after establishingdownlink synchronization information with the serving cell, the terminalmay receive system information that is transmitted by the serving cellthrough a broadcast signaling to obtain information associated with theserving cell.

System information is periodically transmitted in the cell by means of abroadcast. The transmission efficiency of such system informationtransmission method is low, the signaling overhead is large, and thewaste of resources is also large.

SUMMARY

The present disclosure provides a method and device for informationtransmission, which can improve the transmission efficiency and reducethe signaling overhead, thereby the waste of resources is avoided.

In the first aspect, a method for information transmission is provided.The method includes a first device acquires first indication informationtransmitted by a second device, the first indication informationindicating first system information required by the second device; andthe first device transmits the first system information according to thefirst indication information.

Therefore, system information can be transmitted only if there is adevice which requires the system information and a trigger request forthe system information is transmitted, which ensures that the systeminformation can be acquired by the device in time, the transmissionefficiency of the system can be improved and the signaling overhead canbe reduced, thereby the utilization of resources can be improved.

In combination with the first aspect, in a first possible implementationof the first aspect, the first device transmits the first systeminformation according to the first indication information may include:the first device transmits the first system information according to thefirst indication information by means of a broadcast or a multicast.

Therefore, the first device transmits the system information by means ofa broadcast or a multicast after receiving a trigger request for thesystem information from the second device, so that not only the seconddevice can acquire the system information in time, but also otherdevices can acquire the system information in an idle state, powerconsumption and signaling waste caused by converting the other devicesfrom the idle state to a connection state and requesting for the systeminformation from the first device can be avoided when the other devicesneed to acquire the system information.

Optionally, the first device transmits the first system informationaccording to the first indication information may include: the firstdevice transmits the first system information according to the firstindication information by means of a unicast.

In combination with the first aspect or any of above possibleimplementation, in a second possible implementation of the first aspect,both the first device and the second device are terminal devices; or thefirst device is a network device and the second device is a terminaldevice.

In combination with the first aspect or any of above possibleimplementation, in a third possible implementation of the first aspect,the first device acquires the first indication information transmittedby the second device may include: the first device acquires the firstindication information transmitted by the second device, herein thefirst indication information is one of first physical layer indicationinformation, first Media Access Control (MAC) layer indicationinformation, or first Radio Resource Control (RRC) layer indicationinformation.

In combination with the first aspect or any of above possibleimplementation, in a fourth possible implementation of the first aspect,the first device acquires the first indication information transmittedby the second device may include one of: the first device can acquirethe first physical layer indication information transmitted by thesecond device via one of the physical layer channel, the physical layerresource block or the physical layer sequence, herein, each of thephysical layer channel, the physical layer resource block and thephysical layer sequence corresponds to the first system information; thefirst device acquires the first MAC layer indication information from acontrol domain, which corresponds to the first system information, in aMAC layer message or from a control bit, which corresponds to the firstsystem information, in a reserved control domain of a MAC layer message,herein the MAC layer message is from the second device; or the firstdevice acquires the first RRC layer indication information from acontrol domain, which corresponds to the first system information, in aRRC layer message or from a control bit, which corresponds to the firstsystem information, in a reserved control domain of a RRC layer message,herein the RRC layer message is from the second device.

In combination with the first aspect or any of above possibleimplementation, in a fifth possible implementation of the first aspect,the method may further include: the first device transmits secondindication information, herein the second indication informationindicating system information which can be transmitted by the firstdevice.

Optionally, the first device may broadcast the second indicationinformation.

In combination with the first aspect or any of above possibleimplementation, in a sixth possible implementation of the first aspect,the first device broadcasts the second indication information mayinclude: the first device broadcasts the second indication information,herein the second indication information is one of second physical layerindication information, second MAC layer indication information orsecond RRC layer indication information.

In combination with the first aspect or any of above possibleimplementation, in a seventh possible implementation of the firstaspect, the first device broadcasts the second indication informationcomprises one of: the first device transmits the second physical layerindication information corresponding to different system information ordifferent system information sets through one of different physicallayer channels, different physical resource blocks, or differentphysical layer sequences; the first device carries the second RRC layerindication information corresponding to different system information orsystem information sets through different control domains of a RRCmessage or through different bits of a same control domain of a RRCmessage; or the first device carries the second MAC layer indicationinformation corresponding to different system information or systeminformation sets through different control domains of a MAC message orthrough different bits of a same control domain of a MAC message.

In combination with the first aspect or any of above possibleimplementation, in an eighth possible implementation of the firstaspect, the system information comprises at least one of: informationassociated with cell selection and resident, scheduling information ofinformation block in which the system information is located, accessrestriction information, common channel parameters, configurationinformation of subframes of MBSFN, information associated with cellreselection, reselection information of cells with a same frequency,reselection information of cells with different frequencies, reselectioninformation of cells with different systems, reselection information ofcells with different systems, or reselection information of cells withdifferent systems.

In combination with the first aspect or any of above possibleimplementation, in a ninth possible implementation of the first aspect,the method may further include: the first device determines secondsystem information, wherein the second system information is systeminformation associated with the first system information; and the firstdevice transmits the second system information.

In combination with the first aspect or any of above possibleimplementation, in a tenth possible implementation of the first aspect,the first device determines the second system information may include atleast one of: the first device determines other system information inthe system information set to which the first system information belongsas the second system information; and/or the first device determinesother system information utilized by a service utilizing the firstsystem information as the second system information.

In a second aspect, a method for information transmission is provided.The method include: a first device determines that system informationneeds to be transmitted, when a signal is detected on resources fortransmitting first indication information by the first device, hereinthe first indication information is used to request for the systeminformation; and the first device transmits the system information.

In combination with the second aspect or any of above possibleimplementation, in a first possible implementation of the second aspect,the first device transmits the system information include: a terminaldevice which is capable of transmitting the first indication informationusing the resources is determined; and the first device transmits thesystem information may further include: the system information istransmitted to the terminal device.

In combination with the second aspect or any of above possibleimplementation, in a second possible implementation of the secondaspect, the resources are a combination of at least one of a physicalchannel, a physical resource block, an antenna port or a sequence ofcode words.

In a third aspect, a method for information transmission is provided.The method include: a second device transmits first indicationinformation to a first device, the first indication informationindicating first system information required by the second device; andthe second device acquires the first system information transmitted bythe first device.

In combination with the third aspect or any of above possibleimplementation, in a first possible implementation of the third aspect,the second device acquires the first system information transmitted bythe first device may include: the second device acquires the firstsystem information transmitted by the first device by means of one of abroadcast, a multicast or a unicast.

In combination with the third aspect or any of above possibleimplementation, in a second possible implementation of the third aspect,both the first device and the second device are terminal devices; or thefirst device is a network device, the second device is a terminaldevice.

In combination with the third aspect or any of above possibleimplementation, in a third possible implementation of the third aspect,the second device transmits the first indication information to thefirst device, herein the first indication information is one of firstphysical layer indication information, first Media Access Control (MAC)layer indication information, or first Radio Resource Control (RRC)layer indication information.

In combination with the third aspect or any of above possibleimplementation, in a fourth possible implementation of the third aspect,the second device transmits the first indication information to thefirst device may include one of: the second device transmits the firstphysical layer indication information through one of a physical layerchannel, a physical layer resource block or a physical layer sequence,herein each of the physical layer channel, the physical layer resourceblock and the physical layer sequence corresponds to the first systeminformation; the second device transmits the first MAC layer indicationinformation through a control domain, which corresponds to the systeminformation, in a MAC message or through a control bit, whichcorresponds to the first system information, in a reserved controldomain of a MAC message; or the second device transmits the first RRClayer indication information through a control domain, which correspondsto the system information, in a RRC message or through a control bit,which corresponds to the first system information, in a reserved controldomain of a RRC message.

In combination with the third aspect or any of above possibleimplementation, in a fifth possible implementation of the third aspect,the method may further include: before the second device transmits thefirst MAC layer indication information or the first RRC layer indicationinformation: the second device determines that the physical layer of thesecond device performs information transmission by means of sharingchannel.

In combination with the third aspect or any of above possibleimplementation, in a sixth possible implementation of the third aspect,before the second device transmits the first indication information tothe first device, the second device acquires second indicationinformation transmitted by the first device, herein the secondindication information indicating system information which can betransmitted by the first device; the second device transmits the firstindication information to the first device may include the second devicetransmits the first indication information to the first device accordingto the second indication information, herein the first systeminformation belongs to the system information which can be transmittedby the first device.

In combination with the third aspect or any of above possibleimplementation, in a seventh possible implementation of the thirdaspect, the second device acquires the second indication informationtransmitted by the first device may include: the second device acquiressecond physical layer indication information, second MAC layerindication information or second RRC layer indication information whichare transmitted by the first device.

In combination with the third aspect or any of above possibleimplementation, in an eighth possible implementation of the thirdaspect, the second device acquires the second physical layer indicationinformation, the second MAC layer indication information or the secondRRC layer indication information which are transmitted by the firstdevice includes at least of: the second device acquires the secondphysical layer indication information corresponding to different systeminformation or different system information sets via one of differentphysical layer channels, different physical resource blocks, ordifferent physical layer sequences; the second device acquires thesecond RRC layer indication information corresponding to differentsystem information or different system information sets from differentcontrol domains of a RRC message or from different control bits of asame control domain of a RRC message; or the second device acquires thesecond MAC layer indication information corresponding to differentsystem information or different system information sets from differentcontrol domains of a MAC message or from different control bits of asame control domain of a MAC message.

In combination with the third aspect or any of above possibleimplementation, in a ninth possible implementation of the third aspect,the system information includes at least one of the followinginformation: information associated with cell selection and resident,scheduling information of information block in which the systeminformation is located, access restriction information, common channelparameters, configuration information of subframes of MBSFN, informationassociated with cell reselection, reselection information of cells witha same frequency, reselection information of cells with differentfrequencies, reselection information of cells with different systems,reselection information of cells with different systems, or reselectioninformation of cells with different systems.

In combination with the third aspect or any of above possibleimplementation, in a tenth possible implementation of the third aspect,the method may further include: the second device receives second systeminformation transmitted by the first device, wherein the second systeminformation is system information associated with the first systeminformation.

In a fourth aspect, a device for information transmission is provided.The device is configured to perform the method in the above first aspectand any optional implementation of the first aspect. Specifically, thedevice for information transmission includes module units configured toperform the method in the above first aspect and any optionalimplementation of the first aspect.

In a fifth aspect, a device for information transmission is provided.The device is configured to perform the method in the above secondaspect and any optional implementation of the second aspect.Specifically, the device for information transmission includes moduleunits configured to perform the method in the above second aspect andany optional implementation of the second aspect.

In a sixth aspect, a device for information transmission is provided.The device is configured to perform the method in the above third aspectand any optional implementation of the third aspect. Specifically, thedevice for information transmission includes module units configured toperform the method in the above third aspect and any optionalimplementation of the third aspect.

In a seventh aspect, a device for information transmission is provided.The device includes a memory and a processor. The memory is configuredto store instructions. The processor is configured to execute aninstruction stored in the memory and when the processor executes theinstruction stored in the memory, the processor is caused to perform themethod in the first aspect and any optional implementation of the firstaspect.

In an eighth aspect, a device for information transmission is provided.The device includes a memory and a processor. The memory is configuredto store instructions. The processor is configured to execute aninstruction stored in the memory and when the processor executes theinstruction stored in the memory, the processor is caused to perform themethod in the second aspect and any optional implementation of thesecond aspect.

In a ninth aspect, a device for information transmission is provided.The device includes a memory and a processor. The memory is configuredto store instructions. The processor is configured to execute aninstruction stored in the memory and when the processor executes theinstruction stored in the memory, the processor is caused to perform themethod in the third aspect and any optional implementation of the thirdaspect.

In a tenth aspect, a computer storage medium is provided. The computerstorage medium stores program code used for executing the method in theabove first aspect and any optional implementation of the first aspect.

In an eleventh aspect, a computer storage medium is provided. Thecomputer storage medium stores program code used for executing themethod in the above second aspect and any optional implementation of thesecond aspect.

In a twelfth aspect, a computer storage medium is provided. The computerstorage medium stores program code used for executing the method in theabove third aspect and any optional implementation of the third aspect.

BRIEF DESCRIPTION OF DRAWINGS

In order to more clearly illustrate the technical solutions of theembodiments of the present disclosure, the drawings used in theembodiments or the related art description will be briefly describedbelow. It is apparent that the drawings in the following description areonly some embodiments of the present disclosure, those skilled in theart can obtain other drawings according to the drawings without anycreative work.

FIG. 1 is a schematic flowchart of a method for information transmissionaccording to an embodiment of the present disclosure.

FIG. 2 is a schematic flowchart of a method for information transmissionaccording to an embodiment of the present disclosure.

FIG. 3 is a schematic flowchart of a method for information transmissionaccording to an embodiment of the present disclosure.

FIG. 4 is a schematic block diagram of a device for informationtransmission according to an embodiment of the present disclosure.

FIG. 5 is a schematic block diagram of a device for informationtransmission according to an embodiment of the present disclosure.

FIG. 6 is a schematic block diagram of a device for informationtransmission according to an embodiment of the present disclosure.

FIG. 7 is a schematic block diagram of a device for informationtransmission according to an embodiment of the present disclosure.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the disclosure will beclearly and completely described below in conjunction with the drawingsin the embodiments of the disclosure. It is apparent that the describedembodiments are only a part of embodiments of the disclosure, ratherthan all of the embodiments. Based on the embodiments of the disclosure,all of other embodiments, acquired by a person skilled in the artwithout creative work, fall within the scope of protection of thedisclosure.

In some embodiments, a Device to Device (D2D) communication may refer toa Vehicle to Vehicle (V2V) communication, a V2X communication or an X2Xcommunication. In the V2X communication or the X2X communication, X canrefer to any device with wireless receiving and transmittingcapabilities such as but not limited to wireless devices moving slowly,in-vehicle devices moving fast or network control nodes with wirelesstransmitting and receiving capabilities.

The technical solution of the embodiments of the present disclosure canbe applied to various communication systems, for example, a GlobalSystem of Mobile communication (GSM) system, a Code Division MultipleAccess (CDMA) system, a Wideband Code Division Multiple Access (WCDMA)system, a General Packet Radio Service (GPRS), a Long Term Evolution(LTE) system, a Universal Mobile Telecommunication System (UMTS), andother current communication systems. The technical solution of theembodiments of the present disclosure can be especially applied tofuture 5G systems.

The terminal device in the embodiments of the present disclosure mayalso refer to a User Equipment (UE), an access terminal, a subscriberunit, a subscriber station, a mobile station, a remote station, a remoteterminal, a mobile device, a user terminal, a terminal, a wirelesscommunication device, a user agent or a user device. The access terminalmay be a cellular phone, a cordless phone, a Session Initiation Protocol(SIP) phone, a Wireless Local Loop (WLL) station, or a personal digitalassistant (PDA), a handheld device with wireless communicationcapabilities, a computing device with wireless communicationcapabilities or other processing device with wireless communicationcapabilities which is connected to a wireless modem, an in-vehicledevice, a wearable device, a terminal device in a future 5G network, ora terminal device in a future evolved Public Land Mobile Network (PLMN).

The network device in the embodiments of the present disclosure may be adevice for communicating with a terminal device. The network device maybe a Base Transceiver Station (BTS) in a GSM or a CDMA, or may be a basestation in a WCDMA system (NodeB (NB)), may also be an Evolutional NodeB(referred to as “eNB” or “eNodeB”) in the LTE system, or may be awireless controller in a Cloud Radio Access Network (CRAN) scenario, orthe network device may be a relay station, an access point, anin-vehicle device, a wearable device, and a network device in a future5G network or a network device in a future evolved PLMN network.

The system information of the embodiments of the present disclosure maybe used to acquire related information of the serving cell. The systeminformation mentioned in the embodiments of the present disclosure mayinclude information of multiple System Information Blocks (SIBs), forexample, may include at least information about information blocks SIB1,SIB2, SIB3, SIB4, SIBS, SIB6, SIB7 and SIB8.

Herein, the SIB1 mainly includes information associated with cellselection and resident and scheduling information of information block.The SIB2 mainly includes access restriction information, common channelparameters, configuration information of subframes of MultimediaBroadcast multicast service Single Frequency Network (MBSFN). The SIB3mainly includes information associated with cell reselection. The SIB4mainly includes reselection information of cells with a same frequency.The SIBS mainly includes reselection information of cells with differentfrequencies. The SIB6 mainly includes reselection information of cellswith different systems (UMTS Radio Access Network (UTRAN)). The SIB7mainly includes reselection information of cells with different systems(GSM/EDGE radio access network, GSM/Enhanced Data Rate for GSMEvolution(EDGE) (GERAN)). The SIB8 mainly includes reselectioninformation of cells with different systems (CDMA2000).

FIG. 1 is a schematic flowchart of a method 100 for informationtransmission according to an embodiment of the present disclosure. FIG.1 illustrates acts or operations of the information transmission method,but these acts or operations are merely examples, and embodiments of thepresent disclosure may also perform other operations or variations ofthe respective operations in FIG. 1.

In 110, a second device transmits first indication information to afirst device. The first indication information is indicative of firstsystem information required by the second device.

In 120, the second device acquires the first system informationtransmitted by the first device.

FIG. 2 is a schematic flowchart of a method 200 for informationtransmission according to an embodiment of the present disclosure. FIG.2 illustrates acts or operations of the information transmission method,but these acts or operations are merely examples, and the embodiments ofthe present disclosure may also perform other operations or variationsof the respective operations in FIG. 2.

In 210, a first device acquires first indication information transmittedby a second device. The first indication information is indicative offirst system information required by the second device.

In 220, the first device transmits the first system informationaccording to the first indication information.

Therefore, system information can be transmitted only if there is adevice which requires the system information and a trigger request forthe system information is transmitted, which ensures that the systeminformation can be acquired by the device in time, the transmissionefficiency of the system can be improved and the signaling overhead canbe reduced, thereby the utilization of resources can be improved.

It is to be understood that the first system information indicated bythe above first indication information may be single system information,or may be multiple system information, for example, a set of systeminformation.

Optionally, in the embodiments of the present disclosure, both the firstdevice and the second device can be terminal devices. That is, theembodiments of the present disclosure can applied to a D2Dcommunication. Alternatively, the first device is a network device andthe second device is a terminal device.

Optionally, in the embodiments of the present disclosure, the firstdevice can transmit the first system information in multiple manners.

In an implementation, the first device can transmit the first systeminformation by means of a broadcast.

Correspondingly, the second device may receive the first systeminformation that is transmitted by the first device by means of abroadcast.

Therefore, the first device transmits the system information by means ofa broadcast after receiving a trigger request for the system informationfrom the second device, so that not only the second device can acquirethe system information in time, but also other devices can acquire thesystem information in an idle state, power consumption and signalingwaste caused by converting the other devices from the idle state to aconnection state and requesting for the system information from thefirst device can be avoided when the other devices need to acquire thesystem information.

In an implementation, the first device can transmit the first systeminformation by means of a multicast.

Correspondingly, the second device may receive the first systeminformation that is transmitted by the first device by means of amulticast.

Optionally, when the first system transmits the first system informationby means of a multicast, the group where the second device is locatedmay be determined, and the system information is transmitted to multipledevices in the group. For example, one of the identifier of each device,the identifier of the second device or the group identifier of the groupcan be carried in a message where the first system information islocated.

Therefore, the first device transmits the system information by means ofa multicast after receiving a trigger request for the system informationfrom the second device, so that not only the second device can acquirethe system information in time, but also other devices can acquire thesystem information in an idle state, power consumption and signalingwaste caused by converting the other devices from the idle state to aconnection state and requesting for the system information from thefirst device can be avoided when the other devices need to acquire thesystem information.

In an implementation, the first device can transmit the first systeminformation by means of a unicast.

Correspondingly, the second device may receive the first systeminformation that is transmitted by the first device by means of aunicast.

Optionally, when the first system transmits the first system informationby means of a unicast, the identifier of the second device can becarried in a message where the first system information is located.

Optionally, in the embodiments of the present disclosure, the firstindication information may be carried in the physical layer, and thefirst indication information may be a first physical layer indicationinformation.

In this case, the second device can transmit the first physical layerindication information by at least one of a physical channel, a physicalresource block, or a physical layer sequence, herein, each of thephysical layer channel, the physical layer resource block and thephysical layer sequence corresponds to the first system information.

The first device can acquire the first physical layer indicationinformation via one of the physical layer channel, the physical layerresource block or the physical layer sequence, herein, each of thephysical layer channel, the physical layer resource block and thephysical layer sequence corresponds to the first system information.

Herein, one of a physical layer channel, a physical layer resource blockor a physical layer sequence may correspond to single or multiple firstsystem information.

Optionally, in the embodiments of the present disclosure, the firstindication information may be carried in a Media Access Control (MAC)layer, and the first indication information may be first MAC layerindication information.

In this case, the second device may transmit the first MAC layerindication information through a control domain, which corresponds tothe system message, in a MAC message or through a control bit, whichcorresponds to the first system information, in the reserved controldomain of the MAC message.

The first device may acquire the first MAC layer indication informationthrough a control domain, which corresponds to the first systeminformation, in a MAC message or through a control bit, whichcorresponds to the first system information, in the reserved controldomain of the MAC message.

Optionally, in the embodiments of the present disclosure, the firstindication information may be carried in a Radio Resource Control (RRC)layer, and the first indication information may be first RRC layerindication information.

In this case, the second device may transmit the first RRC layerindication information by a control field, which corresponds to thesystem message, in an RRC message or a control bit, which corresponds tothe first system information, in the reserved control domain of the RRCmessage. Optionally, the RRC message may be an RRCEstablishimentRequest.

The first device may acquire the first RRC layer indication informationby a control field, which corresponds to the first system information,in an RRC message or a control bit, which corresponds to the firstsystem information, in the reserved control domain of the RRC message.

Optionally, in the embodiments of the present disclosure, the seconddevice may transmit the first indication information by an RRC messageor a MAC message when determining that the physical layer of the seconddevice performs information transmission by means of sharing channel.

Optionally, in the embodiments of the present disclosure, in addition totransmitting the first system information, the first device may furthertransmit second system information. The second system information issystem information associated with the first system information. Forexample, other system information in the system information set to whichthe first system belongs is determined as the second system information;and/or other system information utilized by a service utilizing thefirst system information is determined as the second system information.

Optionally, in the embodiments of the present disclosure, the firstdevice may transmit second indication information in advance. The secondindication information is indicative of system information that can betransmitted by the first device.

Specifically, the first device may broadcast the second indicationinformation, or transmit the second indication information by adedicated signaling.

When the first device transmits the second indication information by thededicated signaling, the system information that needs to be indicatedmay be determined according to the receiving end. For example, it isassumed that the first device can transmit three system information setsA, B, and C, and the first device determines that the second device onlyrequires the system information set A, the first device may transmit thesecond indication information to the second device. The secondindication information is only used to indicate that the systeminformation set A can be transmitted by the first device.

After acquiring the system information that can be transmitted by thefirst device, the second device may request for the required systeminformation from the first device.

The second device may request for the required system information fromthe first device when the system information is needed, or the seconddevice may predict the system information that may be subsequently used,and request for the system information from the second device.

The first device may transmit the second indication information inmultiple manners.

For example, the first device may transmit the second indicationinformation by means of a broadcast, a multicast or a unicast.

Correspondingly, the second device may acquire the second indicationinformation that is transmitted by the first device by means of abroadcast, a multicast or a unicast.

Optionally, in the embodiments of the present disclosure, the secondindication information may be carried in a physical layer, and thesecond indication information may be second physical layer indicationinformation.

The first device may transmit the second physical layer indicationinformation corresponding to different system information or differentsystem information sets through one of different physical layerchannels, different physical resource blocks, or different sequences.

Correspondingly, the second device may acquire the second physical layerindication information corresponding to different system information ordifferent system information sets via one of different physical layerchannels, different physical resource blocks, or different physicallayer sequences.

Optionally, in the embodiments of the present disclosure, the secondindication information may be carried in a MAC layer, and the secondindication information may be second MAC layer indication information.

The first device carries the second MAC layer indication informationcorresponding to different system information or different systeminformation sets through different control domains of a MAC message orthrough different bits of a same control domain of a MAC message

Correspondingly, the second device acquires the second MAC layerindication information corresponding to different system information ordifferent system information sets from different control domains of aMAC message or different bits of a same control domain of a MAC message.

Optionally, in the embodiments of the present disclosure, the secondindication may be carried in a RRC layer, and the second indicationinformation may be second RRC layer indication information.

The first device carries the second RRC layer indication informationcorresponding to different system information or different systeminformation sets through different control domains of a RRC message orthrough different bits of a same control domain of a RRC message.

Correspondingly, the second device acquires the second RRC layerindication information corresponding to different system information ordifferent system information sets from different control domains of aRRC message or different bits of a same control domain of a RRC message.

Optionally, in the embodiments of the present disclosure, the firstdevice may transmit the second indication information by an RRC messageor a MAC message when determining that the physical layer of the firstdevice performs information transmission by means of sharing channel.

Optionally, the system information set mentioned in the embodiments ofthe present disclosure may be divided according to the. SIB. Forexample, one system information set may include at least one SIB, or thesystem information set may be divided according to other manners, suchas, according to service requirements etc.

Optionally, the system information in the embodiments of the presentdisclosure includes at least one of the following information:information associated with cell selection and resident, schedulinginformation of information block in which the system information islocated, access restriction information, common channel parameters,configuration information of subframes of MBSFN, information associatedwith cell reselection, reselection information of cells with a samefrequency, reselection information of cells with different frequencies,reselection information of cells with different systems, reselectioninformation of cells with different systems, or reselection informationof cells with different systems

FIG. 3 is a schematic flowchart of a method 300 for informationtransmission according to an embodiment of the present disclosure. FIG.3 illustrates the acts or operations of the information transmissionmethod, but these acts or operations are merely examples. Embodiments ofthe present disclosure may perform other operations or variations of therespective operations in FIG. 3.

In 310, the first device determines that system information needs to betransmitted, when a signal is detected on resources for transmittingfirst indication information by the first device, herein the firstindication information is used to request for the system information.

It is to be understood that a signal is detected may mean that thestrength of the detected signal is greater than or equal to a certainintensity threshold.

Optionally, the resources can be a combination of at least one of aphysical channel, a physical resource block, an antenna port or asequence of code words.

In 320, the first device transmits system information.

Therefore, when the first device detects the presence of a signal on theresource for transmitting the indication information for requesting forthe system information, the first device may transmit the systeminformation corresponding to the indication information withoutdemodulating the information, thereby a problem that the first devicefails to transmit the system information in time since the demodulationof the information fails when the indication information is transmittedon the same resource by multiple terminal devices is avoided. And thefirst device may not need to demodulate the indication information,thereby resource waste is reduced and the power is saved.

Optionally, when the first device determines that the system informationneeds to be transmitted, the terminal device which is capable oftransmitting the first indication information using the resources may bedetermined, and the required system information is transmitted to thedetermined terminal device.

For the operation of the second device in the embodiment illustrated inFIG. 3, reference may be made to the foregoing description, and in themethod 300, the first device may also previously transmit systeminformation that can be transmitted, and the specific implementationmanner and the corresponding implementation of the second device canrefer to the above description.

FIG. 4 is a schematic block diagram of a device 400 for informationtransmission according to an embodiment of the present disclosure. Asillustrated in FIG. 4, the device 400 includes a processing unit 410 anda transmitting unit 420. The processing unit 410 is configured toacquire first indication information transmitted by a second device.Here, the first indication information is indicative of systeminformation required by the second device. The transmitting unit 420 isconfigured to transmit the first system information according to thefirst indication information.

Optionally, the transmitting unit 420 is further configured to transmit,the first system information according to the first indicationinformation by means of a broadcast, a multicast, or a unicast.

Optionally, both the device 400 and the second device are terminaldevices. Alternatively, the device 400 is a network device, and thesecond device is a terminal device.

Optionally, the processing unit 420 is further configured to acquire thefirst indication information transmitted by the second device. The firstindication information is one of first physical layer indicationinformation, first Media Access Control (MAC) layer indicationinformation, or first Radio Resource Control (RRC) layer indicationinformation.

Optionally, the processing unit 420 is further configured to perform oneof: acquiring the first physical layer indication informationtransmitted by the second device via one of a physical layer channel, aphysical layer resource block or a physical layer sequence, wherein eachof the physical layer resource block and the physical layer sequencecorresponds to the first system information; acquire the first MAC layerindication information from a control domain, which corresponds to thefirst system information, in a MAC layer message or from a control bit,which corresponds to the first system information, in a reserved controldomain of a MAC layer message, herein the MAC layer message is from thesecond device; or acquiring the first RRC layer indication informationfrom a control domain, which corresponds to the first systeminformation, in a RRC layer message or from a control bit, whichcorresponds to the first system information, in a reserved controldomain of a RRC layer message, the RRC layer message is from the seconddevice.

Optionally, the transmitting unit 420 is further configured to transmitsecond indication information. Herein the second indication informationis indicative of system information which can be transmitted by thedevice 400.

Specifically, the second indication information may be transmitted bymeans of a broadcast or the second indication information may betransmitted by a dedicated signaling.

Optionally, the transmitting unit 420 is further configured to broadcastthe second indication information, herein the second indicationinformation is second physical layer indication information, second MAClayer indication information, or second RRC layer indicationinformation.

Optionally, the transmitting unit 420 is further configured to performone of: transmitting the second physical layer indication informationcorresponding to different system information or different systeminformation sets through one of different physical layer channels,different physical resource blocks, or different physical layersequences; carrying the second RRC layer indication informationcorresponding to different system information or system information setsthrough different control domains of a RRC message or through differentbits of a same control domain of a RRC message; or carrying the secondMAC layer indication information corresponding to different systeminformation or system information sets through different control domainsof a MAC message or through different bits of a same control domain of aMAC message.

Optionally, the system information includes at least one of thefollowing information: information associated with cell selection andresident, scheduling information of information block in which thesystem information is located, access restriction information, commonchannel parameters, configuration information of subframes of MBSFN,information associated with cell reselection, reselection information ofcells with a same frequency, reselection information of cells withdifferent frequencies, reselection information of cells with differentsystems, reselection information of cells with different systems, orreselection information of cells with different systems.

Optionally, the processing unit 410 is further configured to determinesecond system information, herein the second system information issystem information associated with the first system information. Thetransmitting unit 420 is further configured to transmit the secondsystem information.

Optionally, the processing unit 410 is further configured to perform atleast one of: determine, as the second system information, other systeminformation in the system information set to which the first systembelongs, or determine, as the second system information, other systeminformation utilized by a service utilizing the first systeminformation.

FIG. 5 is a schematic block diagram of a device 500 for informationtransmission according to an embodiment of the present disclosure. Asillustrated in FIG. 5, the device 500 includes a processing unit 510 anda transmitting unit 520, herein the processing unit 510 is configured todetermine that system information needs to be transmitted when a signalis detected on resources for transmitting first indication information,herein the first indication information is used to request the systeminformation; the transmitting unit 520 is configured to transmit thesystem information.

Optionally, the processing unit 510 is further configured to determine aterminal device configured to capable of transmitting the firstindication information using the resources; the transmitting unit 520 isfurther configured to transmit the system information to the terminaldevice.

Optionally, the resources are a combination of at least one of aphysical channel, a physical resource block, an antenna port or asequence of code words.

FIG. 6 is a schematic block diagram of a device 600 for informationtransmission according to an embodiment of the present disclosure. Asillustrated in FIG. 6, the device 600 includes a transmitting unit 610and a processing unit 620. The transmitting unit 610 is configured to:transmit first indication information to a first device. Herein thefirst indication information is indicative of first system informationrequired by the device 600. The processing unit 620 is configured toacquire the system information transmitted by the first device.

Optionally, the processing unit 620 is further configured to acquire thefirst system information that is transmitted by the first device bymeans of at least one of a broadcast, a multicast or a unicast.

Optionally, the first device is a terminal device, and the device 600 isa terminal device; or the first device network device, and the device600 is a terminal device.

Optionally, the transmitting unit 610 is further configured to: transmitthe first indication information to the first device, herein the firstindication information is first physical layer indication information,first Media Access Control (MAC) layer indication information, or firstRadio Resource Control (RRC) layer indication information.

Optionally, the transmitting unit 610 is further configured to performone of: transmitting the first physical layer indication informationthrough one of a physical layer channel, a physical layer resource blockor a physical layer sequence, herein each of the physical layer resourceblock and the physical layer sequence corresponds to the first systeminformation; transmitting the first MAC layer indication informationthrough a control domain, which corresponds to the system information,in a MAC message or through a control bit, which corresponds to thefirst system information, in a reserved control domain of a MAC message;or transmitting the first RRC layer indication information through acontrol domain, which corresponds to the system information, in a RRCmessage or through a control bit, which corresponds to the first systeminformation in a reserved control domain of a RRC message.

Optionally, before the transmitting unit 610 transmits the first MAClayer indication information or the first RRC layer indicationinformation, the processing unit 620 is further configured to determinethat the physical layer of the device performs information transmissionby means of sharing channel.

Optionally, before the transmitting unit 610 transmits the firstindication information to the first device, the processing unit 620 isfurther configured to: acquire second indication information that istransmitted by the first device. Herein the second indicationinformation is indicative of the system information which can betransmitted by the first device. And the processing unit 620 isconfigured to transmit the first indication information to the firstdevice according to the second indication information. Here, the systeminformation indicated by the first indication information belongs to thesystem information which can be transmitted by the first device.

Optionally, the processing unit 620 is further configured to acquiresecond physical layer indication information, second MAC layerindication information or second RRC layer indication information whichare transmitted by the first device.

Optionally, the processing unit 620 is further configured to perform oneof: acquiring the second physical layer indication informationcorresponding to different system information or different systeminformation sets via one of different physical layer channels, differentphysical resource blocks, or different physical layer sequences;acquiring the second RRC layer indication information corresponding todifferent system information or different system information sets fromdifferent control domains of a RRC message or from different controlbits of a same control domain of a RRC message; or acquiring the secondMAC layer indication information corresponding to different systeminformation or different system information sets from different controldomains of a MAC message or from different control bits of a samecontrol domain of a MAC message.

Optionally, the system information includes at least one of thefollowing information: information associated with cell selection andresident, scheduling information of information block in which thesystem information is located, access restriction information, commonchannel parameters, configuration information of subframes of MBSFN,information associated with cell reselection, reselection information ofcells with a same frequency, reselection information of cells withdifferent frequencies, reselection information of cells with differentsystems, reselection information of cells with different systems, orreselection information of cells with different systems.

FIG. 7 is a schematic block diagram of a device 700 according to anembodiment of the present disclosure. The device 700 includes aprocessor 710, a memory 720, and a transceiver 730. The memory 720 isconfigured to store program instructions. Processor 710 can call programinstructions stored in the memory 720. The transceiver 730 is forexternal communication. Optionally, the device 700 also includes a bussystem 740 that interconnects the processor 710, the memory 720, and thetransceiver 730.

Optionally, the device 700 may correspond to the foregoing first device,and may implement corresponding operations of the first device in FIG. 2and the optional implementation, and may also implement correspondingoperations of the first device in FIG. 3 and the optionalimplementation.

Optionally, the device may correspond to the foregoing second device,and may implement the corresponding operations of the second device inFIG. 2 and the optional implementation.

In the following, the device 700 is first treated as a device which mayimplement corresponding operations of the first device in FIG. 2 and theoptional implementation.

Specifically, the processor 710 is configured to call the instructionstored in the memory 720 to perform the following operations: acquiringfirst indication information transmitted by the second device. Here, thefirst indication information is indicative of first system informationrequired by the second device. The first system information istransmitted by the transceiver 730 according to the first indicationinformation.

Optionally, the processor 710 is configured to call the instructionsstored in the memory 720 to further perform the following operations:using the transceiver 730 to transmit the first system informationaccording to the first indication information by means of a broadcast, amulticast or a unicast.

Optionally, the device 700 is a terminal device, and the second deviceis a terminal device; or the device 700 is a network device, and thesecond device is a terminal device.

Optionally, the processor 710 is configured to call the instructionstored in the memory 720 to further perform the following operations:acquiring the first indication information transmitted by the seconddevice. Here, the first indication information is one of first physicallayer indication information, first Media Access Control (MAC) layerindication information, or first Radio Resource Control (RRC) layerindication information.

Optionally, the processor 710 is configured to call the instructionstored in the memory 720 to further perform one of the followingoperation: acquiring the first physical layer indication informationtransmitted by the second device via one of a physical layer channel, aphysical layer resource block or a physical layer sequence, herein eachof the physical layer channel, the physical layer resource block and thephysical layer sequence corresponds to the first system information;acquiring the first MAC layer indication information from a controldomain, which corresponds to the first system information, in a MAClayer message or from a control bit, which corresponds to the firstsystem information, in a reserved control domain of a MAC layer message,herein the MAC layer message is from the second device; or acquire thefirst RRC layer indication information from a control domain, whichcorresponds to the first system information, in a RRC layer message orfrom a control bit, which corresponds to the first system information,in a reserved control domain of a RRC layer message, wherein the RRClayer message is from the second device.

Optionally, the processor 710 is configured to call an instructionstored in the memory 720 to further perform the operation of: using thetransceiver 730 to broadcast second indication information. Here, thesecond indication information is indicative of system information whichcan be transmitted by the first device 700.

Optionally, the processor 710 is configured to call the instructionstored in the memory 720 to further perform the following operations:transmitting, by the transceiver 730, the second indication information.Here, the second indication information is second physical layerindication information, second MAC layer indication information orsecond RRC layer indication information.

Specifically, the second indication information may be transmitted bymeans of a broadcast or the second indication information may betransmitted by a dedicated signaling.

Optionally, the processor 710 is configured to call the instructionsstored in the memory 720 to perform one of the following operations:using the transceiver 730 to transmit the second physical layerindication information corresponding to different system information ordifferent system information sets through one of different physicallayer channels, different physical resource blocks, or differentphysical layer sequences; carrying the second RRC layer indicationinformation corresponding to different system information or systeminformation sets through different control domains of a RRC message orthrough different bits of a same control domain of a RRC message; orcarrying the second MAC layer indication information corresponding todifferent system information or system information sets throughdifferent control domains of a MAC message or through different bits ofa same control domain of a MAC message.

Optionally, information associated with cell selection and resident,scheduling information of information block in which the systeminformation is located, access restriction information, common channelparameters, configuration information of subframes of MBSFN, informationassociated with cell reselection, reselection information of cells witha same frequency, reselection information of cells with differentfrequencies, reselection information of cells with different systems,reselection information of cells with different systems, or reselectioninformation of cells with different systems.

In the following, the device 700 is treated as a device which mayimplement corresponding operations of the second device in FIG. 1 andthe optional implementation.

Specifically, the processor 710 is configured to call an instructionstored in the memory 720 to perform the following operations: using thetransceiver 730 to transmit first indication information to the firstdevice; and acquiring the first system information transmitted by thefirst device. Here, the first indication information is indicative offirst system information required by the device 700.

Optionally, the processor 710 is configured to call the instructionsstored in the memory 720 to further perform the following operations:acquiring the first system information which is transmitted by the firstdevice by means of a broadcast, a multicast or a unicast.

Optionally, the first device is a terminal device, and the device 700 isa terminal device. Alternatively, the first device network device, andthe device 700 is a terminal device.

Optionally, the processor 710 is configured to call the instructionstored in the memory 720 to perform the following operations: using thetransceiver 730 to transmit the first indication information to thefirst device. Here, the first indication information is first physicallayer indication information, first Media Access Control (MAC) layerindication information, or first Radio Resource Control (RRC) layerindication information.

Optionally, the processor 710 is configured to call the instructionstored in the memory 720 to perform one of the following operations:using the transceiver 730 to transmit the first physical layerindication information through one of a physical layer channel, aphysical layer resource block or a physical layer sequence, herein eachof the physical layer channel, the physical layer resource block and thephysical layer sequence corresponds to the first system information;using the transceiver 730 to transmit the first MAC layer indicationinformation through a control domain, which corresponds to the systeminformation, in a MAC message or through a control bit, whichcorresponds to the first system information, in a reserved controldomain of a MAC message; or using the transceiver 730 to transmit thefirst RRC layer indication information through a control domain, whichcorresponds to the system information, in a RRC message or through acontrol bit, which corresponds to the first system information, in areserved control domain of a RRC message.

Optionally, the processor 710 is configured to call the instructionstored in the memory 720 to further perform the following operations:before use the transceiver 730 to transmit the first MAC layerindication information or the first RRC layer indication information,determining that the physical layer of the device 700 performsinformation transmission by means of sharing channel.

Optionally, the processor 710 is configured to call the instructionstored in the memory 720 to perform the following operations: before usethe transceiver 730 to transmit the first indication information to thefirst device, acquiring a second indication information transmitted bythe first device; and using the transceiver 730 to transmit the firstindication information according to the second indication information,.Here, the second indication information is indicative of systeminformation which can be transmitted by the first device. Here, thefirst system information belongs to the system information which can betransmitted by the first device.

Optionally, the processor 710 is configured to call the instructionstored in the memory 720 to further perform the operations of: acquiringsecond physical layer indication information, second MAC layerindication information or second RRC layer indication information whichare transmitted by the first device.

Optionally, the processor 710 is configured to call the instructionsstored in the memory 720 to further perform one of the followingoperations: acquiring the second physical layer indication informationcorresponding to different system information or different systeminformation sets via one of different physical layer channels, differentphysical resource blocks, or different physical layer sequences;acquiring the second RRC layer indication information corresponding todifferent system information or different system information sets fromdifferent control domains of a RRC message or from different controlbits of a same control domain of a RRC message; or acquiring the secondMAC layer indication information corresponding to different systeminformation or different system information sets from different controldomains of a MAC message or from different control bits of a samecontrol domain of a MAC message.

Optionally, information associated with cell selection and resident,scheduling information of information block in which the systeminformation is located, access restriction information, common channelparameters, configuration information of subframes of MBSFN, informationassociated with cell reselection, reselection information of cells witha same frequency, reselection information of cells with differentfrequencies, reselection information of cells with different systems,reselection information of cells with different systems, or reselectioninformation of cells with different systems.

In the following, the device 700 is treated as a device which mayimplement corresponding operations of the first device in FIG. 3 and theoptional implementation.

Specifically, the processor 710 is configured to call an instructionstored in the memory 720 to perform the following operations:determining that system information needs to be transmitted, when asignal is detected on resources for transmitting a first indicationinformation, herein the first indication information is used to requestfor the system information; and using the transceiver 730 to transmitthe system information.

Optionally, the processor 710 is configured to call an instructionstored in the memory 720 to further perform the following operations:determining a terminal device which is capable of transmitting the firstindication information using the resources; and transmitting the systeminformation to the terminal device.

Optionally, the resources are a combination of at least one of aphysical channel, a physical resource block, an antenna port or asequence of code words.

It is to be understood that, as mentioned in the embodiments of thepresent disclosure, the processor 710 calls the instruction stored inthe memory to acquire the indication information or the systeminformation transmitted by the other devices, the transceiver may beused to perform the detection of the information and further perform thedemodulation of the information etc.

Those of ordinary skill in the art will appreciate that the elements andalgorithm acts of the various examples described in connection with theembodiments disclosed herein can be implemented in electronic hardwareor a combination of computer software and electronic hardware. Whetherthese functions are performed in hardware or software depends on thespecific application and design constraints of the solution. A personskilled in the art can use different methods for implementing thedescribed functions for each particular application, but suchimplementation should not be considered to be beyond the scope of thepresent disclosure.

A person skilled in the art can clearly understand that for theconvenience and brevity of the description, the specific working processof the system, the device and the unit described above can refer to thecorresponding process in the foregoing method embodiment, and detailsare not described herein again.

In the several embodiments provided by the present disclosure, it is tobe understood that the disclosed systems, devices, and methods may beimplemented in other manners. For example, the device embodimentsdescribed above are merely illustrative. For example, the division ofthe unit is only a logical function division. In actual implementation,there may be another division manner, for example, multiple units orcomponents may be combined or can be integrated into another system, orsome features can be ignored or not executed. In addition, the couplingor direct coupling or communication connection illustrated or discussedmay be an indirect coupling or communication connection through someinterface, device or unit, which may be electrical, mechanical orotherwise.

The units described as separate components may or may not, be physicallyseparated, and the components displayed as units may or may not bephysical units, that is, may be located in one place, or may bedistributed to multiple network units. Some or all of the units may beselected according to actual needs to achieve the purpose of thesolution of the embodiment.

In addition, each functional unit in each embodiment of the presentdisclosure may be integrated into one processing unit, or each unit mayexist physically separately, or two or more units may be integrated intoone unit.

The functions may be stored in a computer readable storage medium ifimplemented in the form of a software functional unit and sold or usedas a standalone product. Based on such understanding, the technicalsolution of the present disclosure, which is essential or are the partscontributed to the related art, or is a part of the technical solution,may be embodied in the form of a software product, which is stored in astorage medium, including several instructions are used to cause acomputer device (which may be a personal computer, server, or networkdevice, etc.) to perform all or part of the acts of the methodsdescribed in various embodiments of the present disclosure. Theforegoing storage medium includes a U disk, a mobile hard disk, aRead-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk,or an optical disc, and the like, which can store program code.

The above is only the specific embodiment of the present disclosure, butthe scope of the present disclosure is not limited thereto, any changesor substitutions which can be easily thought by the person skilled inthe art will be covered by the technical scope of the presentdisclosure. Therefore, the scope of the invention should be determinedby the scope of the appended claims.

1. A device for information transmission, comprising a processor, amemory configured to store program instructions, and a transceiver,wherein the processor is configured to call the program instructionsstored in the memory to acquire first indication information transmittedby a second device, the first indication information is used to requestfirst system information required by the second device; and thetransceiver is configured to transmit the first system informationaccording to the first indication information.
 2. The device of claim 1,wherein the transceiver is further configured to transmit the firstsystem information according to the first indication information bymeans of one of a broadcast, a multicast or a unicast.
 3. The device ofclaim 1, wherein both the device and the second device are terminaldevices; or the device is a network device, the second device is aterminal device.
 4. The device of claim 1, wherein the processor isconfigured to call the program instructions stored in the memory toacquire the first indication information transmitted by the seconddevice, wherein the first indication information is one of firstphysical layer indication information, first Media Access Control (MAC)layer indication information, or first Radio Resource Control (RRC)layer indication information.
 5. The device of claim 4, wherein theprocessor is configured to call the program instructions stored in thememory to perform one of: acquiring the first physical layer indicationinformation transmitted by the second device via one or a combination ofa physical layer channel, a physical layer resource block or a physicallayer sequence, wherein each or the combination of the physical layerchannel, the physical layer resource block and the physical layersequence corresponds to the first system information; or acquiring thefirst MAC layer indication information from a control domain, whichcorresponds to the first system information, in a MAC layer message orfrom a control bit, which corresponds to the first system information,in a reserved control domain of a MAC layer message, wherein the MAClayer message is from the second device; or acquiring the first RRClayer indication information from a control domain, which corresponds tothe first system information, in a RRC layer message or from a controlbit, which corresponds to the first system information, in a reservedcontrol domain of a RRC layer message, wherein the RRC layer message isfrom the second device.
 6. The device of claim 1, wherein thetransceiver is further configured to transmit second indicationinformation via broadcasting or dedicated signaling, the secondindication information indicating system information which can betransmitted by the device.
 7. The device of claim 6, wherein thetransceiver is further configured to broadcast the second indicationinformation, wherein the second indication information is one of secondphysical layer indication information, second Media Access Control (MAC)layer indication information or second Radio Resource Control (RRC)layer indication information.
 8. The device of claim 7, wherein thetransceiver is further configured to perform one of: transmitting thesecond physical layer indication information corresponding to differentsystem information or different system information sets through one ofdifferent physical layer channels, different physical resource blocks,or different physical layer sequences; carrying the second RadioResource Control (RRC) layer indication information corresponding todifferent system information or system information sets throughdifferent control domains of a RRC message or through different bits ofa same control domain of a RRC message; or carrying the second MediaAccess. Control (MAC) layer indication information corresponding todifferent system information or system information sets throughdifferent control domains of a MAC message or through different bits ofa same control domain of a MAC message.
 9. The device of claim 1,wherein the processor is configured to call the program instructionsstored in the memory to determine second system information, wherein thesecond system information is system information associated with thefirst system information; and the transceiver is further configured totransmit the second system information.
 10. The device of claim 9,wherein the processor is configured to call the program instructionsstored in the memory to perform at least one of: determining, as thesecond system information, other system information in the systeminformation set to which the first system belongs, or determining, asthe second system information, other system information utilized by aservice utilizing the first system information.
 11. The device of claim1, wherein the system information comprises at least one of: informationassociated with cell selection and resident, scheduling information ofinformation block in which the system information is located, accessrestriction information, common channel parameters, configurationinformation of subframes of Multimedia Broadcast multicast serviceSingle Frequency Network (MBSFN), information associated with cellreselection, reselection information of cells with a same frequency,reselection information of cells with different frequencies, reselectioninformation of cells with different systems.
 12. A device forinformation transmission, comprising a processor, a memory configured tostore program instructions, and a transceiver, wherein the processor isconfigured to call the program instructions stored in the memory todetermine that system information needs to be transmitted when asequence is detected on radio resources for transmitting firstindication information, wherein the first indication information is usedto request the system information; and the transceiver is configured totransmit the system information.
 13. The device of claim 12, wherein theprocessor is configured to call the program instructions stored in thememory to determine a terminal device configured to capable oftransmitting the first indication information using the resources; andthe transceiver is further configured to transmit the system informationto the terminal device.
 14. The device of claim 12, the resources are acombination of at least one of a physical channel, a physical resourceblock, an antenna port or a sequence of code words.
 15. A device forinformation transmission, comprising a processor, a memory configured tostore program instructions, and a transceiver, wherein the transceiveris configured to transmit first indication information to a firstdevice, wherein the first indication information is used to requestfirst system information required by the device; and the processor isconfigured to call the program instructions stored in the memory toacquire the first system information transmitted by the first device.16. The device of claim 15, wherein the processor is configured to callthe program instructions stored in the memory to acquire the firstsystem information which is transmitted by the first device by means ofone of a broadcast, a multicast or a unicast.
 17. The device of claim15, wherein the transceiver is further configured to transmit the firstindication information to the first device, wherein the first indicationinformation is one of first physical layer indication information, firstMedia Access Control (MAC) layer indication information, or first RadioResource Control (RRC) layer indication information, wherein thetransceiver is further configured to perform one of: transmitting thefirst physical layer indication information through one or a combinationof a physical layer channel, a physical layer resource block or aphysical layer sequence, wherein each or the combination of the physicallayer channel, the physical layer resource block and the physical layersequence corresponds to the first system information; transmitting thefirst MAC layer indication information through a control domain, whichcorresponds to the system information, in a MAC message or through acontrol bit, which corresponds to the first system information, in areserved control domain of a MAC message; or transmitting the first RRClayer indication information through a control domain, which correspondsto the system information, in a RRC message or through a control bit,which corresponds to the first system information in a reserved controldomain of a RRC message.
 18. The device of claim 15, wherein theprocessor is configured to call the program instructions stored in thememory to, before the first indication information is transmitted by thetransmitting unit, acquire second indication information transmitted bythe first device, the second indication information indicating thesystem information which can be transmitted by the first device; andtransmit the first indication information to the first device accordingto the second indication information, the first system informationbelongs to the system information which can be transmitted by the firstdevice.
 19. The device of claim 18, wherein the processor is configuredto call the program instructions stored in the memory to: acquire secondphysical layer indication information, second Media Access Control (MAC)layer indication information or second Radio Resource Control (RRC)layer indication information which are transmitted by the first device,wherein the processor is configured to call the program instructionsstored in the memory to perform one of: acquiring the second physicallayer indication information corresponding to different systeminformation or different system information sets from one of differentphysical layer channels, different physical resource blocks, ordifferent physical layer sequences; acquiring the second RRC layerindication information corresponding to different system information ordifferent system information sets from different control domains of aRRC message or from different control bits of a same control domain of aRRC message; or acquiring the second MAC layer indication informationcorresponding to different system information or different systeminformation sets from different control domains of a MAC message or fromdifferent control bits of a same control domain of a MAC message. 20.The device of claim 15, wherein the transceiver is further configured toreceive second system information transmitted by the first device,wherein the second system information is system information associatedwith the first system information.